The hydraulically bound mixtures used in the currently applicable SB 250 are COPRO/BENOR certified.
COPRO certification is based on continuous internal industrial monitoring and checking carried out by the manufacturer of the certified product. This self-monitoring procedure is implemented from the selection of the raw materials throughout all production stages right up to the finished product.
Manufacturers are periodically subject to appraisal by the inspection body. This is done by means of an external inspection of the specified properties according to the mixture’s SB 250.
You can easily download the quality certificates there!